Jane Street’s Korro Bio KRRO Stock Holding History

Jane Street’s Portfolio KRRO Stock Details KRRO Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	–	Sell	-115,704	Closed	-$1.31M	–	12427
2026 Q1	$1.31M	Sell	115,704 -172,753	-60%	-$1.9M	﹤0.01%	5913
2025 Q4	$2.31M	Buy	+288,457	New	+$6.74M	﹤0.01%	4527
2025 Q1	–	Sell	-7,604	Closed	-$289K	–	10079
2024 Q4	$289K	Buy	+7,604	New	+$391K	﹤0.01%	7790
2024 Q2	–	Sell	-25,814	Closed	-$2.32M	–	9827
2024 Q1	$2.32M	Buy	25,814 +18,449	+250%	+$1.01M	﹤0.01%	3863
2023 Q4	$353K	Buy	+7,365	New	+$243K	﹤0.01%	7367
2023 Q1	–	Sell	-201	Closed	-$38.6K	–	9505
2022 Q4	$38.6K	Sell	201 -291	-59%	-$29.9K	﹤0.01%	8444
2022 Q3	$44K	Buy	+492	New	+$49.9K	﹤0.01%	8977
2021 Q2	–	Sell	-2,502	Closed	-$1.22M	–	10124
2021 Q1	$1.19M	Buy	+2,502	New	+$4.86M	﹤0.01%	5129
2020 Q4	–	Sell	-365	Closed	-$351K	–	7815
2020 Q3	$351K	Buy	365 +47	+15%	+$50.5K	﹤0.01%	5659
2020 Q2	$370K	Buy	+318	New	+$287K	﹤0.01%	5518

Other funds holding KRRO

LCM

Lynx1 Capital Management San Juan, Puerto Rico $866M AUM 231.68% 1-Year Est. Return

NMC

NEA Management Company Timonium, Maryland $1.59B AUM 234.06% 1-Year Est. Return

VR Adviser New York $3.3B AUM 525.74% 1-Year Est. Return

AVLSA

Atlas Venture Life Science Advisors Cambridge, Massachusetts $881M AUM 160.77% 1-Year Est. Return

Balyasny Asset Management Chicago, Illinois $80.2B AUM 51.53% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

AAA

Affinity Asset Advisors New York $2.21B AUM 431.26% 1-Year Est. Return

NCM

Nantahala Capital Management New Canaan, Connecticut $3.01B AUM 119.46% 1-Year Est. Return

Adage Capital Partners Boston, Massachusetts $71.3B AUM 56.8% 1-Year Est. Return

ACM

ADAR1 Capital Management Austin, Texas $2.19B AUM 374.99% 1-Year Est. Return

Jane Street's KRRO Position: Q2 2026 in Review

Jane Street sold out of Korro Bio (KRRO) in Q2 2026, closing a stake of 115,704 shares — an estimated $1.31M sold.

Jane Street first reported a position in KRRO in Q2 2020 and held it in 10 quarters. The position peaked at $2.32M in Q1 2024. 107 funds tracked by Wall St. Rank hold KRRO as of Q2 2026.

Jane Street reported no remaining Korro Bio position as of Q2 2026 after selling out during the quarter.
Jane Street sold 115,704 Korro Bio shares in Q2 2026, an estimated $1.31M.
Jane Street first reported a position in Korro Bio in Q2 2020 and held it in 10 quarters.
Jane Street's Korro Bio position peaked at $2.32M in Q1 2024.
107 funds tracked by Wall St. Rank held Korro Bio as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.